Drop an index from a table
AI agents call drop-index to permanently remove resources in Mysql Multi — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Dropping an index is an irreversible destructive operation that cannot be undone without recreating the index. While it doesn't delete data rows (unlike drop-table), it permanently removes database metadata and structures. The impact is high because it degrades query performance and can cause application failures if dependent queries rely on that index.
From the tool's definition Tool name is 'drop-index' and description states 'Drop an index from a table'. The verb 'drop' in database contexts is a terminal operation that removes database objects irreversibly.
Attacks that exploit this kind of access
Drop an index from a table. It is categorised as a Destructive tool in the Mysql Multi MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mysql Multi MCP server in PolicyLayer and add a rule for drop-index: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mysql Multi. Nothing to install.
drop-index is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the drop-index rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for drop-index. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
drop-index is provided by the Mysql Multi MCP server (pchimbolo/mysql-multi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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